Process for preparing acrylic polymer sheets using a dual peroxide
initiator system
    3.
    发明授权
    Process for preparing acrylic polymer sheets using a dual peroxide initiator system 失效
    使用双过氧化物引发剂体系制备丙烯酸聚合物片材的方法

    公开(公告)号:US4588798A

    公开(公告)日:1986-05-13

    申请号:US697402

    申请日:1985-02-01

    Inventor: Barry J. Heitner

    CPC classification number: C08F265/06

    Abstract: A process for producing acrylic polymers which have high thermal stability, are free of defects and have a low level of unreacted monomer. The process includes the polymerization at a high production rate of a methyl methacrylate syrup in the presence of a mixture of two peroxide initiators. The first initiator has a 5-minute half-life at temperatures between about 75.degree. C. to 100.degree. C. and emits a maximum of 1 mole of carbon dioxide per 2 moles of free radicals. The second initiator has a one minute half-life at temperatures of between about 105.degree. C. to about 125.degree. C. and emits a maximum of 1 mole of carbon dioxide per 1 mole of free radicals.

    Abstract translation: 一种制备具有高热稳定性的丙烯酸类聚合物的方法,没有缺陷并且具有低水平的未反应单体。 该方法包括在两种过氧化物引发剂的混合物存在下,以高生产率的甲基丙烯酸甲酯糖浆聚合。 第一引发剂在约75℃至100℃的温度下具有5分钟的半衰期,并且每2摩尔自由基发射最多1摩尔的二氧化碳。 第二引发剂在约105℃至约125℃的温度下具有1分钟的半衰期,并且每1摩尔自由基发出最多1摩尔的二氧化碳。

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